<?php
/**
 * Copyright (c) Enalean, 2014. All Rights Reserved.
 *
 * This file is a part of Tuleap.
 *
 * Tuleap is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Tuleap is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Tuleap; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

class Tracker_MasschangeDataValueExtractor {

    public function getNewValues(array $masschange_data) {
        $fields_data  = array();
        foreach($masschange_data as $field_id => $data) {

            if ($this->hasDataChanged($data)) {
                $fields_data[$field_id] = $data;
            }
        }

        return $fields_data;
    }

    private function hasDataChanged($data) {
        return (
            (is_array($data) && ! in_array($GLOBALS['Language']->getText('global','unchanged'), $data)) ||
            (! is_array($data) && $data !== $GLOBALS['Language']->getText('global','unchanged'))
        );
    }
}